Home / 1,046.63-1,569.95-429.90

Finding the Fourth Proportional to 1,046.63, 1,569.95 and 429.90

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Solution

The fourth proportional to 1,046.63, 1,569.95 and 429.90 is: 644.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.63 : 1,569.95 = 429.90 : x
  2. Step 2: Convert to fraction form
    1,046.63/1,569.95 = 429.90/x
  3. Step 3: Cross multiply
    1,046.63x = 1,569.95 × 429.90
  4. Step 4: Simplify right side
    1,046.63x = 674,921.51
  5. Step 5: Solve for x
    x = 674,921.51/1,046.63
  6. Step 6: Final answer
    x = 644.85

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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.