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Finding the Fourth Proportional to 1,177.12, 1,624.48 and 653.12

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Solution

The fourth proportional to 1,177.12, 1,624.48 and 653.12 is: 901.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.12 : 1,624.48 = 653.12 : x
  2. Step 2: Convert to fraction form
    1,177.12/1,624.48 = 653.12/x
  3. Step 3: Cross multiply
    1,177.12x = 1,624.48 × 653.12
  4. Step 4: Simplify right side
    1,177.12x = 1,060,980.38
  5. Step 5: Solve for x
    x = 1,060,980.38/1,177.12
  6. Step 6: Final answer
    x = 901.34

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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.