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Finding the Fourth Proportional to 563.68, 777.18 and 453.16

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Solution

The fourth proportional to 563.68, 777.18 and 453.16 is: 624.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.68 : 777.18 = 453.16 : x
  2. Step 2: Convert to fraction form
    563.68/777.18 = 453.16/x
  3. Step 3: Cross multiply
    563.68x = 777.18 × 453.16
  4. Step 4: Simplify right side
    563.68x = 352,186.89
  5. Step 5: Solve for x
    x = 352,186.89/563.68
  6. Step 6: Final answer
    x = 624.80

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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.