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Finding the Fourth Proportional to 520.39, 718.19 and 504.24

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Solution

The fourth proportional to 520.39, 718.19 and 504.24 is: 695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.39 : 718.19 = 504.24 : x
  2. Step 2: Convert to fraction form
    520.39/718.19 = 504.24/x
  3. Step 3: Cross multiply
    520.39x = 718.19 × 504.24
  4. Step 4: Simplify right side
    520.39x = 362,140.13
  5. Step 5: Solve for x
    x = 362,140.13/520.39
  6. Step 6: Final answer
    x = 695.90

Related Problems

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Half scale
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Double scale
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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.