Home / 1,315.15-1,972.85-494.01

Finding the Fourth Proportional to 1,315.15, 1,972.85 and 494.01

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Solution

The fourth proportional to 1,315.15, 1,972.85 and 494.01 is: 741.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.15 : 1,972.85 = 494.01 : x
  2. Step 2: Convert to fraction form
    1,315.15/1,972.85 = 494.01/x
  3. Step 3: Cross multiply
    1,315.15x = 1,972.85 × 494.01
  4. Step 4: Simplify right side
    1,315.15x = 974,607.63
  5. Step 5: Solve for x
    x = 974,607.63/1,315.15
  6. Step 6: Final answer
    x = 741.06

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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.