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Finding the Fourth Proportional to 651.76, 898.96 and 430.88

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Solution

The fourth proportional to 651.76, 898.96 and 430.88 is: 594.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.76 : 898.96 = 430.88 : x
  2. Step 2: Convert to fraction form
    651.76/898.96 = 430.88/x
  3. Step 3: Cross multiply
    651.76x = 898.96 × 430.88
  4. Step 4: Simplify right side
    651.76x = 387,343.88
  5. Step 5: Solve for x
    x = 387,343.88/651.76
  6. Step 6: Final answer
    x = 594.30

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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.