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Finding the Fourth Proportional to 903.89, 1,348.18 and 876.56

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Solution

The fourth proportional to 903.89, 1,348.18 and 876.56 is: 1,307.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.89 : 1,348.18 = 876.56 : x
  2. Step 2: Convert to fraction form
    903.89/1,348.18 = 876.56/x
  3. Step 3: Cross multiply
    903.89x = 1,348.18 × 876.56
  4. Step 4: Simplify right side
    903.89x = 1,181,751.73
  5. Step 5: Solve for x
    x = 1,181,751.73/903.89
  6. Step 6: Final answer
    x = 1,307.40

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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.