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Finding the Fourth Proportional to 632.30, 860.87 and 630.35

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Solution

The fourth proportional to 632.30, 860.87 and 630.35 is: 858.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.30 : 860.87 = 630.35 : x
  2. Step 2: Convert to fraction form
    632.30/860.87 = 630.35/x
  3. Step 3: Cross multiply
    632.30x = 860.87 × 630.35
  4. Step 4: Simplify right side
    632.30x = 542,649.40
  5. Step 5: Solve for x
    x = 542,649.40/632.30
  6. Step 6: Final answer
    x = 858.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.