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Finding the Fourth Proportional to 1,124.76, 1,550.94 and 958.74

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Solution

The fourth proportional to 1,124.76, 1,550.94 and 958.74 is: 1,322.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124.76 : 1,550.94 = 958.74 : x
  2. Step 2: Convert to fraction form
    1,124.76/1,550.94 = 958.74/x
  3. Step 3: Cross multiply
    1,124.76x = 1,550.94 × 958.74
  4. Step 4: Simplify right side
    1,124.76x = 1,486,948.22
  5. Step 5: Solve for x
    x = 1,486,948.22/1,124.76
  6. Step 6: Final answer
    x = 1,322.01

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Double scale
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1.5x scale

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.