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Finding the Fourth Proportional to 526.60, 726.72 and 316.84

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Solution

The fourth proportional to 526.60, 726.72 and 316.84 is: 437.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.60 : 726.72 = 316.84 : x
  2. Step 2: Convert to fraction form
    526.60/726.72 = 316.84/x
  3. Step 3: Cross multiply
    526.60x = 726.72 × 316.84
  4. Step 4: Simplify right side
    526.60x = 230,253.96
  5. Step 5: Solve for x
    x = 230,253.96/526.60
  6. Step 6: Final answer
    x = 437.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.