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Finding the Fourth Proportional to 648.08, 970.68 and 476.72

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Solution

The fourth proportional to 648.08, 970.68 and 476.72 is: 714.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.08 : 970.68 = 476.72 : x
  2. Step 2: Convert to fraction form
    648.08/970.68 = 476.72/x
  3. Step 3: Cross multiply
    648.08x = 970.68 × 476.72
  4. Step 4: Simplify right side
    648.08x = 462,742.57
  5. Step 5: Solve for x
    x = 462,742.57/648.08
  6. Step 6: Final answer
    x = 714.02

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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.