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Finding the Fourth Proportional to 895.25, 1,342.98 and 620.66

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Solution

The fourth proportional to 895.25, 1,342.98 and 620.66 is: 931.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.25 : 1,342.98 = 620.66 : x
  2. Step 2: Convert to fraction form
    895.25/1,342.98 = 620.66/x
  3. Step 3: Cross multiply
    895.25x = 1,342.98 × 620.66
  4. Step 4: Simplify right side
    895.25x = 833,537.32
  5. Step 5: Solve for x
    x = 833,537.32/895.25
  6. Step 6: Final answer
    x = 931.06

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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.