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Finding the Fourth Proportional to 482.76, 665.76 and 434.16

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Solution

The fourth proportional to 482.76, 665.76 and 434.16 is: 598.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.76 : 665.76 = 434.16 : x
  2. Step 2: Convert to fraction form
    482.76/665.76 = 434.16/x
  3. Step 3: Cross multiply
    482.76x = 665.76 × 434.16
  4. Step 4: Simplify right side
    482.76x = 289,046.36
  5. Step 5: Solve for x
    x = 289,046.36/482.76
  6. Step 6: Final answer
    x = 598.74

Related Problems

Find fourth proportional to 241.38, 332.88 and 217.08
Half scale
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Double scale
Find fourth proportional to 483.76, 667.14 and 435.16
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.