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Finding the Fourth Proportional to 649.01, 895.29 and 386.98

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Solution

The fourth proportional to 649.01, 895.29 and 386.98 is: 533.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.01 : 895.29 = 386.98 : x
  2. Step 2: Convert to fraction form
    649.01/895.29 = 386.98/x
  3. Step 3: Cross multiply
    649.01x = 895.29 × 386.98
  4. Step 4: Simplify right side
    649.01x = 346,455.63
  5. Step 5: Solve for x
    x = 346,455.63/649.01
  6. Step 6: Final answer
    x = 533.82

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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.