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Finding the Fourth Proportional to 563.40, 776.52 and 555.84

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Solution

The fourth proportional to 563.40, 776.52 and 555.84 is: 766.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.40 : 776.52 = 555.84 : x
  2. Step 2: Convert to fraction form
    563.40/776.52 = 555.84/x
  3. Step 3: Cross multiply
    563.40x = 776.52 × 555.84
  4. Step 4: Simplify right side
    563.40x = 431,620.88
  5. Step 5: Solve for x
    x = 431,620.88/563.40
  6. Step 6: Final answer
    x = 766.10

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Double scale
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1.5x scale

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.