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Finding the Fourth Proportional to 373.47, 515.45 and 242.86

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Solution

The fourth proportional to 373.47, 515.45 and 242.86 is: 335.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.47 : 515.45 = 242.86 : x
  2. Step 2: Convert to fraction form
    373.47/515.45 = 242.86/x
  3. Step 3: Cross multiply
    373.47x = 515.45 × 242.86
  4. Step 4: Simplify right side
    373.47x = 125,182.19
  5. Step 5: Solve for x
    x = 125,182.19/373.47
  6. Step 6: Final answer
    x = 335.19

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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.