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Finding the Fourth Proportional to 745.56, 1,116.45 and 623.52

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Solution

The fourth proportional to 745.56, 1,116.45 and 623.52 is: 933.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.56 : 1,116.45 = 623.52 : x
  2. Step 2: Convert to fraction form
    745.56/1,116.45 = 623.52/x
  3. Step 3: Cross multiply
    745.56x = 1,116.45 × 623.52
  4. Step 4: Simplify right side
    745.56x = 696,128.90
  5. Step 5: Solve for x
    x = 696,128.90/745.56
  6. Step 6: Final answer
    x = 933.70

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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.