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Finding the Fourth Proportional to 983.94, 1,358.60 and 652.83

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Solution

The fourth proportional to 983.94, 1,358.60 and 652.83 is: 901.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.94 : 1,358.60 = 652.83 : x
  2. Step 2: Convert to fraction form
    983.94/1,358.60 = 652.83/x
  3. Step 3: Cross multiply
    983.94x = 1,358.60 × 652.83
  4. Step 4: Simplify right side
    983.94x = 886,931.57
  5. Step 5: Solve for x
    x = 886,931.57/983.94
  6. Step 6: Final answer
    x = 901.41

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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.