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Finding the Fourth Proportional to 984.76, 1,358.37 and 591.71

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Solution

The fourth proportional to 984.76, 1,358.37 and 591.71 is: 816.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.76 : 1,358.37 = 591.71 : x
  2. Step 2: Convert to fraction form
    984.76/1,358.37 = 591.71/x
  3. Step 3: Cross multiply
    984.76x = 1,358.37 × 591.71
  4. Step 4: Simplify right side
    984.76x = 803,754.32
  5. Step 5: Solve for x
    x = 803,754.32/984.76
  6. Step 6: Final answer
    x = 816.20

Related Problems

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Half scale
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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.