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Finding the Fourth Proportional to 563.19, 777.06 and 342.15

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Solution

The fourth proportional to 563.19, 777.06 and 342.15 is: 472.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.19 : 777.06 = 342.15 : x
  2. Step 2: Convert to fraction form
    563.19/777.06 = 342.15/x
  3. Step 3: Cross multiply
    563.19x = 777.06 × 342.15
  4. Step 4: Simplify right side
    563.19x = 265,869.99
  5. Step 5: Solve for x
    x = 265,869.99/563.19
  6. Step 6: Final answer
    x = 472.08

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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.