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Finding the Fourth Proportional to 530.13, 793.47 and 479.61

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Solution

The fourth proportional to 530.13, 793.47 and 479.61 is: 717.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.13 : 793.47 = 479.61 : x
  2. Step 2: Convert to fraction form
    530.13/793.47 = 479.61/x
  3. Step 3: Cross multiply
    530.13x = 793.47 × 479.61
  4. Step 4: Simplify right side
    530.13x = 380,556.15
  5. Step 5: Solve for x
    x = 380,556.15/530.13
  6. Step 6: Final answer
    x = 717.85

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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.