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Finding the Fourth Proportional to 729.53, 1,004.55 and 623.82

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Solution

The fourth proportional to 729.53, 1,004.55 and 623.82 is: 859.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    729.53 : 1,004.55 = 623.82 : x
  2. Step 2: Convert to fraction form
    729.53/1,004.55 = 623.82/x
  3. Step 3: Cross multiply
    729.53x = 1,004.55 × 623.82
  4. Step 4: Simplify right side
    729.53x = 626,658.38
  5. Step 5: Solve for x
    x = 626,658.38/729.53
  6. Step 6: Final answer
    x = 859.00

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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.