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Finding the Fourth Proportional to 1,475.53, 2,210.95 and 816.84

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Solution

The fourth proportional to 1,475.53, 2,210.95 and 816.84 is: 1,223.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.53 : 2,210.95 = 816.84 : x
  2. Step 2: Convert to fraction form
    1,475.53/2,210.95 = 816.84/x
  3. Step 3: Cross multiply
    1,475.53x = 2,210.95 × 816.84
  4. Step 4: Simplify right side
    1,475.53x = 1,805,992.40
  5. Step 5: Solve for x
    x = 1,805,992.40/1,475.53
  6. Step 6: Final answer
    x = 1,223.96

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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.