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Finding the Fourth Proportional to 895.18, 1,235.20 and 563.38

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Solution

The fourth proportional to 895.18, 1,235.20 and 563.38 is: 777.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.18 : 1,235.20 = 563.38 : x
  2. Step 2: Convert to fraction form
    895.18/1,235.20 = 563.38/x
  3. Step 3: Cross multiply
    895.18x = 1,235.20 × 563.38
  4. Step 4: Simplify right side
    895.18x = 695,886.98
  5. Step 5: Solve for x
    x = 695,886.98/895.18
  6. Step 6: Final answer
    x = 777.37

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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.