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Finding the Fourth Proportional to 373.46, 557.74 and 318.02

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Solution

The fourth proportional to 373.46, 557.74 and 318.02 is: 474.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.46 : 557.74 = 318.02 : x
  2. Step 2: Convert to fraction form
    373.46/557.74 = 318.02/x
  3. Step 3: Cross multiply
    373.46x = 557.74 × 318.02
  4. Step 4: Simplify right side
    373.46x = 177,373.22
  5. Step 5: Solve for x
    x = 177,373.22/373.46
  6. Step 6: Final answer
    x = 474.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.