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Finding the Fourth Proportional to 895.31, 1,341.85 and 621.33

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Solution

The fourth proportional to 895.31, 1,341.85 and 621.33 is: 931.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.31 : 1,341.85 = 621.33 : x
  2. Step 2: Convert to fraction form
    895.31/1,341.85 = 621.33/x
  3. Step 3: Cross multiply
    895.31x = 1,341.85 × 621.33
  4. Step 4: Simplify right side
    895.31x = 833,731.66
  5. Step 5: Solve for x
    x = 833,731.66/895.31
  6. Step 6: Final answer
    x = 931.22

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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.