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Finding the Fourth Proportional to 1,322.47, 1,983.98 and 456.67

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Solution

The fourth proportional to 1,322.47, 1,983.98 and 456.67 is: 685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.47 : 1,983.98 = 456.67 : x
  2. Step 2: Convert to fraction form
    1,322.47/1,983.98 = 456.67/x
  3. Step 3: Cross multiply
    1,322.47x = 1,983.98 × 456.67
  4. Step 4: Simplify right side
    1,322.47x = 906,024.15
  5. Step 5: Solve for x
    x = 906,024.15/1,322.47
  6. Step 6: Final answer
    x = 685.10

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1.5x scale

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.