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Finding the Fourth Proportional to 456.32, 630.58 and 373.40

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Solution

The fourth proportional to 456.32, 630.58 and 373.40 is: 515.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.32 : 630.58 = 373.40 : x
  2. Step 2: Convert to fraction form
    456.32/630.58 = 373.40/x
  3. Step 3: Cross multiply
    456.32x = 630.58 × 373.40
  4. Step 4: Simplify right side
    456.32x = 235,456.85
  5. Step 5: Solve for x
    x = 235,456.85/456.32
  6. Step 6: Final answer
    x = 515.99

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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.