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Finding the Fourth Proportional to 1,043.04, 1,439 and 623.42

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Solution

The fourth proportional to 1,043.04, 1,439 and 623.42 is: 860.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.04 : 1,439 = 623.42 : x
  2. Step 2: Convert to fraction form
    1,043.04/1,439 = 623.42/x
  3. Step 3: Cross multiply
    1,043.04x = 1,439 × 623.42
  4. Step 4: Simplify right side
    1,043.04x = 897,101.38
  5. Step 5: Solve for x
    x = 897,101.38/1,043.04
  6. Step 6: Final answer
    x = 860.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.