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Finding the Fourth Proportional to 1,615.72, 2,430.90 and 966.94

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Solution

The fourth proportional to 1,615.72, 2,430.90 and 966.94 is: 1,454.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.72 : 2,430.90 = 966.94 : x
  2. Step 2: Convert to fraction form
    1,615.72/2,430.90 = 966.94/x
  3. Step 3: Cross multiply
    1,615.72x = 2,430.90 × 966.94
  4. Step 4: Simplify right side
    1,615.72x = 2,350,534.45
  5. Step 5: Solve for x
    x = 2,350,534.45/1,615.72
  6. Step 6: Final answer
    x = 1,454.79

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1.5x scale

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.