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Finding the Fourth Proportional to 526.64, 788.61 and 475.61

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Solution

The fourth proportional to 526.64, 788.61 and 475.61 is: 712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.64 : 788.61 = 475.61 : x
  2. Step 2: Convert to fraction form
    526.64/788.61 = 475.61/x
  3. Step 3: Cross multiply
    526.64x = 788.61 × 475.61
  4. Step 4: Simplify right side
    526.64x = 375,070.80
  5. Step 5: Solve for x
    x = 375,070.80/526.64
  6. Step 6: Final answer
    x = 712.20

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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.