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Finding the Fourth Proportional to 530.60, 799.92 and 499.28

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Solution

The fourth proportional to 530.60, 799.92 and 499.28 is: 752.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.60 : 799.92 = 499.28 : x
  2. Step 2: Convert to fraction form
    530.60/799.92 = 499.28/x
  3. Step 3: Cross multiply
    530.60x = 799.92 × 499.28
  4. Step 4: Simplify right side
    530.60x = 399,384.06
  5. Step 5: Solve for x
    x = 399,384.06/530.60
  6. Step 6: Final answer
    x = 752.70

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.