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Finding the Fourth Proportional to 647.80, 894.41 and 524.00

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Solution

The fourth proportional to 647.80, 894.41 and 524.00 is: 723.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.80 : 894.41 = 524.00 : x
  2. Step 2: Convert to fraction form
    647.80/894.41 = 524.00/x
  3. Step 3: Cross multiply
    647.80x = 894.41 × 524.00
  4. Step 4: Simplify right side
    647.80x = 468,672.42
  5. Step 5: Solve for x
    x = 468,672.42/647.80
  6. Step 6: Final answer
    x = 723.49

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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.