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Finding the Fourth Proportional to 1,206.95, 1,810.49 and 477.14

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Solution

The fourth proportional to 1,206.95, 1,810.49 and 477.14 is: 715.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206.95 : 1,810.49 = 477.14 : x
  2. Step 2: Convert to fraction form
    1,206.95/1,810.49 = 477.14/x
  3. Step 3: Cross multiply
    1,206.95x = 1,810.49 × 477.14
  4. Step 4: Simplify right side
    1,206.95x = 863,857.20
  5. Step 5: Solve for x
    x = 863,857.20/1,206.95
  6. Step 6: Final answer
    x = 715.74

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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.