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Finding the Fourth Proportional to 745.32, 1,117.59 and 334.26

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Solution

The fourth proportional to 745.32, 1,117.59 and 334.26 is: 501.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.32 : 1,117.59 = 334.26 : x
  2. Step 2: Convert to fraction form
    745.32/1,117.59 = 334.26/x
  3. Step 3: Cross multiply
    745.32x = 1,117.59 × 334.26
  4. Step 4: Simplify right side
    745.32x = 373,565.63
  5. Step 5: Solve for x
    x = 373,565.63/745.32
  6. Step 6: Final answer
    x = 501.22

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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.