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Finding the Fourth Proportional to 526.32, 726.37 and 316.58

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Solution

The fourth proportional to 526.32, 726.37 and 316.58 is: 436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.32 : 726.37 = 316.58 : x
  2. Step 2: Convert to fraction form
    526.32/726.37 = 316.58/x
  3. Step 3: Cross multiply
    526.32x = 726.37 × 316.58
  4. Step 4: Simplify right side
    526.32x = 229,949.79
  5. Step 5: Solve for x
    x = 229,949.79/526.32
  6. Step 6: Final answer
    x = 436.90

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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.