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Finding the Fourth Proportional to 530.39, 795.15 and 400.13

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Solution

The fourth proportional to 530.39, 795.15 and 400.13 is: 599.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.39 : 795.15 = 400.13 : x
  2. Step 2: Convert to fraction form
    530.39/795.15 = 400.13/x
  3. Step 3: Cross multiply
    530.39x = 795.15 × 400.13
  4. Step 4: Simplify right side
    530.39x = 318,162.38
  5. Step 5: Solve for x
    x = 318,162.38/530.39
  6. Step 6: Final answer
    x = 599.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.