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Finding the Fourth Proportional to 432.90, 597.28 and 315.04

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Solution

The fourth proportional to 432.90, 597.28 and 315.04 is: 434.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.90 : 597.28 = 315.04 : x
  2. Step 2: Convert to fraction form
    432.90/597.28 = 315.04/x
  3. Step 3: Cross multiply
    432.90x = 597.28 × 315.04
  4. Step 4: Simplify right side
    432.90x = 188,167.09
  5. Step 5: Solve for x
    x = 188,167.09/432.90
  6. Step 6: Final answer
    x = 434.67

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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.