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Finding the Fourth Proportional to 529.39, 790.06 and 517.11

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Solution

The fourth proportional to 529.39, 790.06 and 517.11 is: 771.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.39 : 790.06 = 517.11 : x
  2. Step 2: Convert to fraction form
    529.39/790.06 = 517.11/x
  3. Step 3: Cross multiply
    529.39x = 790.06 × 517.11
  4. Step 4: Simplify right side
    529.39x = 408,547.93
  5. Step 5: Solve for x
    x = 408,547.93/529.39
  6. Step 6: Final answer
    x = 771.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.