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Finding the Fourth Proportional to 745.65, 1,118.07 and 334.89

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Solution

The fourth proportional to 745.65, 1,118.07 and 334.89 is: 502.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.65 : 1,118.07 = 334.89 : x
  2. Step 2: Convert to fraction form
    745.65/1,118.07 = 334.89/x
  3. Step 3: Cross multiply
    745.65x = 1,118.07 × 334.89
  4. Step 4: Simplify right side
    745.65x = 374,430.46
  5. Step 5: Solve for x
    x = 374,430.46/745.65
  6. Step 6: Final answer
    x = 502.15

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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.