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Finding the Fourth Proportional to 903.70, 1,346.22 and 876.50

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Solution

The fourth proportional to 903.70, 1,346.22 and 876.50 is: 1,305.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.70 : 1,346.22 = 876.50 : x
  2. Step 2: Convert to fraction form
    903.70/1,346.22 = 876.50/x
  3. Step 3: Cross multiply
    903.70x = 1,346.22 × 876.50
  4. Step 4: Simplify right side
    903.70x = 1,179,961.83
  5. Step 5: Solve for x
    x = 1,179,961.83/903.70
  6. Step 6: Final answer
    x = 1,305.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.