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Finding the Fourth Proportional to 671.48, 1,005.86 and 652.04

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Solution

The fourth proportional to 671.48, 1,005.86 and 652.04 is: 976.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.48 : 1,005.86 = 652.04 : x
  2. Step 2: Convert to fraction form
    671.48/1,005.86 = 652.04/x
  3. Step 3: Cross multiply
    671.48x = 1,005.86 × 652.04
  4. Step 4: Simplify right side
    671.48x = 655,860.95
  5. Step 5: Solve for x
    x = 655,860.95/671.48
  6. Step 6: Final answer
    x = 976.74

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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.