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Finding the Fourth Proportional to 563.06, 777.12 and 415.51

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Solution

The fourth proportional to 563.06, 777.12 and 415.51 is: 573.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.06 : 777.12 = 415.51 : x
  2. Step 2: Convert to fraction form
    563.06/777.12 = 415.51/x
  3. Step 3: Cross multiply
    563.06x = 777.12 × 415.51
  4. Step 4: Simplify right side
    563.06x = 322,901.13
  5. Step 5: Solve for x
    x = 322,901.13/563.06
  6. Step 6: Final answer
    x = 573.48

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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.