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Finding the Fourth Proportional to 897.04, 1,238.03 and 649.18

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Solution

The fourth proportional to 897.04, 1,238.03 and 649.18 is: 895.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.04 : 1,238.03 = 649.18 : x
  2. Step 2: Convert to fraction form
    897.04/1,238.03 = 649.18/x
  3. Step 3: Cross multiply
    897.04x = 1,238.03 × 649.18
  4. Step 4: Simplify right side
    897.04x = 803,708.70
  5. Step 5: Solve for x
    x = 803,708.70/897.04
  6. Step 6: Final answer
    x = 895.96

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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.