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Finding the Fourth Proportional to 595.16, 891.76 and 420.97

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Solution

The fourth proportional to 595.16, 891.76 and 420.97 is: 630.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.16 : 891.76 = 420.97 : x
  2. Step 2: Convert to fraction form
    595.16/891.76 = 420.97/x
  3. Step 3: Cross multiply
    595.16x = 891.76 × 420.97
  4. Step 4: Simplify right side
    595.16x = 375,399.59
  5. Step 5: Solve for x
    x = 375,399.59/595.16
  6. Step 6: Final answer
    x = 630.75

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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.