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Finding the Fourth Proportional to 456.95, 630.50 and 270.42

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Solution

The fourth proportional to 456.95, 630.50 and 270.42 is: 373.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.95 : 630.50 = 270.42 : x
  2. Step 2: Convert to fraction form
    456.95/630.50 = 270.42/x
  3. Step 3: Cross multiply
    456.95x = 630.50 × 270.42
  4. Step 4: Simplify right side
    456.95x = 170,498.46
  5. Step 5: Solve for x
    x = 170,498.46/456.95
  6. Step 6: Final answer
    x = 373.13

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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.