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Finding the Fourth Proportional to 895.24, 1,342.45 and 621.46

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Solution

The fourth proportional to 895.24, 1,342.45 and 621.46 is: 931.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.24 : 1,342.45 = 621.46 : x
  2. Step 2: Convert to fraction form
    895.24/1,342.45 = 621.46/x
  3. Step 3: Cross multiply
    895.24x = 1,342.45 × 621.46
  4. Step 4: Simplify right side
    895.24x = 834,278.98
  5. Step 5: Solve for x
    x = 834,278.98/895.24
  6. Step 6: Final answer
    x = 931.91

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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.