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Finding the Fourth Proportional to 710.44, 1,064.32 and 634.20

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Solution

The fourth proportional to 710.44, 1,064.32 and 634.20 is: 950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.44 : 1,064.32 = 634.20 : x
  2. Step 2: Convert to fraction form
    710.44/1,064.32 = 634.20/x
  3. Step 3: Cross multiply
    710.44x = 1,064.32 × 634.20
  4. Step 4: Simplify right side
    710.44x = 674,991.74
  5. Step 5: Solve for x
    x = 674,991.74/710.44
  6. Step 6: Final answer
    x = 950.10

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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.