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Finding the Fourth Proportional to 1,630.76, 2,445.88 and 476.24

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Solution

The fourth proportional to 1,630.76, 2,445.88 and 476.24 is: 714.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,630.76 : 2,445.88 = 476.24 : x
  2. Step 2: Convert to fraction form
    1,630.76/2,445.88 = 476.24/x
  3. Step 3: Cross multiply
    1,630.76x = 2,445.88 × 476.24
  4. Step 4: Simplify right side
    1,630.76x = 1,164,825.89
  5. Step 5: Solve for x
    x = 1,164,825.89/1,630.76
  6. Step 6: Final answer
    x = 714.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.