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Finding the Fourth Proportional to 895.75, 1,343.46 and 279.47

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Solution

The fourth proportional to 895.75, 1,343.46 and 279.47 is: 419.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.75 : 1,343.46 = 279.47 : x
  2. Step 2: Convert to fraction form
    895.75/1,343.46 = 279.47/x
  3. Step 3: Cross multiply
    895.75x = 1,343.46 × 279.47
  4. Step 4: Simplify right side
    895.75x = 375,456.77
  5. Step 5: Solve for x
    x = 375,456.77/895.75
  6. Step 6: Final answer
    x = 419.15

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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.