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Finding the Fourth Proportional to 1,737.40, 2,606.20 and 438.96

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Solution

The fourth proportional to 1,737.40, 2,606.20 and 438.96 is: 658.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,737.40 : 2,606.20 = 438.96 : x
  2. Step 2: Convert to fraction form
    1,737.40/2,606.20 = 438.96/x
  3. Step 3: Cross multiply
    1,737.40x = 2,606.20 × 438.96
  4. Step 4: Simplify right side
    1,737.40x = 1,144,017.55
  5. Step 5: Solve for x
    x = 1,144,017.55/1,737.40
  6. Step 6: Final answer
    x = 658.47

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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.