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Finding the Fourth Proportional to 985.05, 1,358.24 and 735.95

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Solution

The fourth proportional to 985.05, 1,358.24 and 735.95 is: 1,014.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    985.05 : 1,358.24 = 735.95 : x
  2. Step 2: Convert to fraction form
    985.05/1,358.24 = 735.95/x
  3. Step 3: Cross multiply
    985.05x = 1,358.24 × 735.95
  4. Step 4: Simplify right side
    985.05x = 999,596.73
  5. Step 5: Solve for x
    x = 999,596.73/985.05
  6. Step 6: Final answer
    x = 1,014.77

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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.