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Finding the Fourth Proportional to 1,388.76, 2,082.69 and 464.06

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Solution

The fourth proportional to 1,388.76, 2,082.69 and 464.06 is: 695.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388.76 : 2,082.69 = 464.06 : x
  2. Step 2: Convert to fraction form
    1,388.76/2,082.69 = 464.06/x
  3. Step 3: Cross multiply
    1,388.76x = 2,082.69 × 464.06
  4. Step 4: Simplify right side
    1,388.76x = 966,482.71
  5. Step 5: Solve for x
    x = 966,482.71/1,388.76
  6. Step 6: Final answer
    x = 695.93

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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.