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Finding the Fourth Proportional to 1,132.57, 1,698.81 and 310.93

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Solution

The fourth proportional to 1,132.57, 1,698.81 and 310.93 is: 466.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.57 : 1,698.81 = 310.93 : x
  2. Step 2: Convert to fraction form
    1,132.57/1,698.81 = 310.93/x
  3. Step 3: Cross multiply
    1,132.57x = 1,698.81 × 310.93
  4. Step 4: Simplify right side
    1,132.57x = 528,210.99
  5. Step 5: Solve for x
    x = 528,210.99/1,132.57
  6. Step 6: Final answer
    x = 466.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.