Home / 1,177.31-1,624.74-653.45

Finding the Fourth Proportional to 1,177.31, 1,624.74 and 653.45

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Solution

The fourth proportional to 1,177.31, 1,624.74 and 653.45 is: 901.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.31 : 1,624.74 = 653.45 : x
  2. Step 2: Convert to fraction form
    1,177.31/1,624.74 = 653.45/x
  3. Step 3: Cross multiply
    1,177.31x = 1,624.74 × 653.45
  4. Step 4: Simplify right side
    1,177.31x = 1,061,678.23
  5. Step 5: Solve for x
    x = 1,061,678.23/1,177.31
  6. Step 6: Final answer
    x = 901.78

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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.