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Finding the Fourth Proportional to 1,554.32, 2,332.92 and 785.36

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Solution

The fourth proportional to 1,554.32, 2,332.92 and 785.36 is: 1,178.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.32 : 2,332.92 = 785.36 : x
  2. Step 2: Convert to fraction form
    1,554.32/2,332.92 = 785.36/x
  3. Step 3: Cross multiply
    1,554.32x = 2,332.92 × 785.36
  4. Step 4: Simplify right side
    1,554.32x = 1,832,182.05
  5. Step 5: Solve for x
    x = 1,832,182.05/1,554.32
  6. Step 6: Final answer
    x = 1,178.77

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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.