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Finding the Fourth Proportional to 552.04, 759.78 and 480.76

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Solution

The fourth proportional to 552.04, 759.78 and 480.76 is: 661.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.04 : 759.78 = 480.76 : x
  2. Step 2: Convert to fraction form
    552.04/759.78 = 480.76/x
  3. Step 3: Cross multiply
    552.04x = 759.78 × 480.76
  4. Step 4: Simplify right side
    552.04x = 365,271.83
  5. Step 5: Solve for x
    x = 365,271.83/552.04
  6. Step 6: Final answer
    x = 661.68

Related Problems

Find fourth proportional to 276.02, 379.89 and 240.38
Half scale
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Double scale
Find fourth proportional to 553.04, 761.16 and 481.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.