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Finding the Fourth Proportional to 1,675.88, 2,312.63 and 929.82

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Solution

The fourth proportional to 1,675.88, 2,312.63 and 929.82 is: 1,283.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.88 : 2,312.63 = 929.82 : x
  2. Step 2: Convert to fraction form
    1,675.88/2,312.63 = 929.82/x
  3. Step 3: Cross multiply
    1,675.88x = 2,312.63 × 929.82
  4. Step 4: Simplify right side
    1,675.88x = 2,150,337.73
  5. Step 5: Solve for x
    x = 2,150,337.73/1,675.88
  6. Step 6: Final answer
    x = 1,283.11

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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.