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Finding the Fourth Proportional to 1,125.34, 1,553.43 and 705.59

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Solution

The fourth proportional to 1,125.34, 1,553.43 and 705.59 is: 974.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.34 : 1,553.43 = 705.59 : x
  2. Step 2: Convert to fraction form
    1,125.34/1,553.43 = 705.59/x
  3. Step 3: Cross multiply
    1,125.34x = 1,553.43 × 705.59
  4. Step 4: Simplify right side
    1,125.34x = 1,096,084.67
  5. Step 5: Solve for x
    x = 1,096,084.67/1,125.34
  6. Step 6: Final answer
    x = 974.00

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1.5x scale

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.