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Finding the Fourth Proportional to 1,275.84, 1,758.36 and 925.92

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Solution

The fourth proportional to 1,275.84, 1,758.36 and 925.92 is: 1,276.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275.84 : 1,758.36 = 925.92 : x
  2. Step 2: Convert to fraction form
    1,275.84/1,758.36 = 925.92/x
  3. Step 3: Cross multiply
    1,275.84x = 1,758.36 × 925.92
  4. Step 4: Simplify right side
    1,275.84x = 1,628,100.69
  5. Step 5: Solve for x
    x = 1,628,100.69/1,275.84
  6. Step 6: Final answer
    x = 1,276.10

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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.