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Finding the Fourth Proportional to 563.28, 838.64 and 555.18

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Solution

The fourth proportional to 563.28, 838.64 and 555.18 is: 826.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.28 : 838.64 = 555.18 : x
  2. Step 2: Convert to fraction form
    563.28/838.64 = 555.18/x
  3. Step 3: Cross multiply
    563.28x = 838.64 × 555.18
  4. Step 4: Simplify right side
    563.28x = 465,596.16
  5. Step 5: Solve for x
    x = 465,596.16/563.28
  6. Step 6: Final answer
    x = 826.58

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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.