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Finding the Fourth Proportional to 722.86, 1,079.24 and 625.24

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Solution

The fourth proportional to 722.86, 1,079.24 and 625.24 is: 933.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.86 : 1,079.24 = 625.24 : x
  2. Step 2: Convert to fraction form
    722.86/1,079.24 = 625.24/x
  3. Step 3: Cross multiply
    722.86x = 1,079.24 × 625.24
  4. Step 4: Simplify right side
    722.86x = 674,784.02
  5. Step 5: Solve for x
    x = 674,784.02/722.86
  6. Step 6: Final answer
    x = 933.49

Related Problems

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.