Home / 1,045.95-1,569.44-490.43

Finding the Fourth Proportional to 1,045.95, 1,569.44 and 490.43

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Solution

The fourth proportional to 1,045.95, 1,569.44 and 490.43 is: 735.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.95 : 1,569.44 = 490.43 : x
  2. Step 2: Convert to fraction form
    1,045.95/1,569.44 = 490.43/x
  3. Step 3: Cross multiply
    1,045.95x = 1,569.44 × 490.43
  4. Step 4: Simplify right side
    1,045.95x = 769,700.46
  5. Step 5: Solve for x
    x = 769,700.46/1,045.95
  6. Step 6: Final answer
    x = 735.89

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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.