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Finding the Fourth Proportional to 524.78, 722.55 and 445.93

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Solution

The fourth proportional to 524.78, 722.55 and 445.93 is: 613.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.78 : 722.55 = 445.93 : x
  2. Step 2: Convert to fraction form
    524.78/722.55 = 445.93/x
  3. Step 3: Cross multiply
    524.78x = 722.55 × 445.93
  4. Step 4: Simplify right side
    524.78x = 322,206.72
  5. Step 5: Solve for x
    x = 322,206.72/524.78
  6. Step 6: Final answer
    x = 613.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.