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Finding the Fourth Proportional to 649.06, 895.70 and 383.45

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Solution

The fourth proportional to 649.06, 895.70 and 383.45 is: 529.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.06 : 895.70 = 383.45 : x
  2. Step 2: Convert to fraction form
    649.06/895.70 = 383.45/x
  3. Step 3: Cross multiply
    649.06x = 895.70 × 383.45
  4. Step 4: Simplify right side
    649.06x = 343,454.25
  5. Step 5: Solve for x
    x = 343,454.25/649.06
  6. Step 6: Final answer
    x = 529.16

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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.