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Finding the Fourth Proportional to 526.18, 726.40 and 366.88

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Solution

The fourth proportional to 526.18, 726.40 and 366.88 is: 506.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.18 : 726.40 = 366.88 : x
  2. Step 2: Convert to fraction form
    526.18/726.40 = 366.88/x
  3. Step 3: Cross multiply
    526.18x = 726.40 × 366.88
  4. Step 4: Simplify right side
    526.18x = 266,501.63
  5. Step 5: Solve for x
    x = 266,501.63/526.18
  6. Step 6: Final answer
    x = 506.48

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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.