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Finding the Fourth Proportional to 642.36, 886.73 and 432.75

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Solution

The fourth proportional to 642.36, 886.73 and 432.75 is: 597.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    642.36 : 886.73 = 432.75 : x
  2. Step 2: Convert to fraction form
    642.36/886.73 = 432.75/x
  3. Step 3: Cross multiply
    642.36x = 886.73 × 432.75
  4. Step 4: Simplify right side
    642.36x = 383,730.24
  5. Step 5: Solve for x
    x = 383,730.24/642.36
  6. Step 6: Final answer
    x = 597.38

Related Problems

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.