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Finding the Fourth Proportional to 740.26, 1,108.24 and 577.45

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Solution

The fourth proportional to 740.26, 1,108.24 and 577.45 is: 864.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.26 : 1,108.24 = 577.45 : x
  2. Step 2: Convert to fraction form
    740.26/1,108.24 = 577.45/x
  3. Step 3: Cross multiply
    740.26x = 1,108.24 × 577.45
  4. Step 4: Simplify right side
    740.26x = 639,953.19
  5. Step 5: Solve for x
    x = 639,953.19/740.26
  6. Step 6: Final answer
    x = 864.50

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1.5x scale

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.