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Finding the Fourth Proportional to 520.93, 716.74 and 450.76

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Solution

The fourth proportional to 520.93, 716.74 and 450.76 is: 620.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.93 : 716.74 = 450.76 : x
  2. Step 2: Convert to fraction form
    520.93/716.74 = 450.76/x
  3. Step 3: Cross multiply
    520.93x = 716.74 × 450.76
  4. Step 4: Simplify right side
    520.93x = 323,077.72
  5. Step 5: Solve for x
    x = 323,077.72/520.93
  6. Step 6: Final answer
    x = 620.20

Related Problems

Find fourth proportional to 260.46, 358.37 and 225.38
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Double scale
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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.