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Finding the Fourth Proportional to 1,322.74, 1,984.25 and 348.91

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Solution

The fourth proportional to 1,322.74, 1,984.25 and 348.91 is: 523.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.74 : 1,984.25 = 348.91 : x
  2. Step 2: Convert to fraction form
    1,322.74/1,984.25 = 348.91/x
  3. Step 3: Cross multiply
    1,322.74x = 1,984.25 × 348.91
  4. Step 4: Simplify right side
    1,322.74x = 692,324.67
  5. Step 5: Solve for x
    x = 692,324.67/1,322.74
  6. Step 6: Final answer
    x = 523.40

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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.