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Finding the Fourth Proportional to 648.61, 895.40 and 607.17

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Solution

The fourth proportional to 648.61, 895.40 and 607.17 is: 838.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.61 : 895.40 = 607.17 : x
  2. Step 2: Convert to fraction form
    648.61/895.40 = 607.17/x
  3. Step 3: Cross multiply
    648.61x = 895.40 × 607.17
  4. Step 4: Simplify right side
    648.61x = 543,660.02
  5. Step 5: Solve for x
    x = 543,660.02/648.61
  6. Step 6: Final answer
    x = 838.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.