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Finding the Fourth Proportional to 671.77, 1,002.95 and 630.57

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Solution

The fourth proportional to 671.77, 1,002.95 and 630.57 is: 941.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.77 : 1,002.95 = 630.57 : x
  2. Step 2: Convert to fraction form
    671.77/1,002.95 = 630.57/x
  3. Step 3: Cross multiply
    671.77x = 1,002.95 × 630.57
  4. Step 4: Simplify right side
    671.77x = 632,431.76
  5. Step 5: Solve for x
    x = 632,431.76/671.77
  6. Step 6: Final answer
    x = 941.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.