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Finding the Fourth Proportional to 1,594.79, 2,391.23 and 657.45

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Solution

The fourth proportional to 1,594.79, 2,391.23 and 657.45 is: 985.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,594.79 : 2,391.23 = 657.45 : x
  2. Step 2: Convert to fraction form
    1,594.79/2,391.23 = 657.45/x
  3. Step 3: Cross multiply
    1,594.79x = 2,391.23 × 657.45
  4. Step 4: Simplify right side
    1,594.79x = 1,572,110.88
  5. Step 5: Solve for x
    x = 1,572,110.88/1,594.79
  6. Step 6: Final answer
    x = 985.78

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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.