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Finding the Fourth Proportional to 432.03, 646.89 and 292.92

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Solution

The fourth proportional to 432.03, 646.89 and 292.92 is: 438.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.03 : 646.89 = 292.92 : x
  2. Step 2: Convert to fraction form
    432.03/646.89 = 292.92/x
  3. Step 3: Cross multiply
    432.03x = 646.89 × 292.92
  4. Step 4: Simplify right side
    432.03x = 189,483.49
  5. Step 5: Solve for x
    x = 189,483.49/432.03
  6. Step 6: Final answer
    x = 438.58

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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.