Home / 1,125.14-1,552.75-627.76

Finding the Fourth Proportional to 1,125.14, 1,552.75 and 627.76

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Solution

The fourth proportional to 1,125.14, 1,552.75 and 627.76 is: 866.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.14 : 1,552.75 = 627.76 : x
  2. Step 2: Convert to fraction form
    1,125.14/1,552.75 = 627.76/x
  3. Step 3: Cross multiply
    1,125.14x = 1,552.75 × 627.76
  4. Step 4: Simplify right side
    1,125.14x = 974,748.89
  5. Step 5: Solve for x
    x = 974,748.89/1,125.14
  6. Step 6: Final answer
    x = 866.34

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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.