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Finding the Fourth Proportional to 895.11, 1,339.22 and 620.37

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Solution

The fourth proportional to 895.11, 1,339.22 and 620.37 is: 928.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.11 : 1,339.22 = 620.37 : x
  2. Step 2: Convert to fraction form
    895.11/1,339.22 = 620.37/x
  3. Step 3: Cross multiply
    895.11x = 1,339.22 × 620.37
  4. Step 4: Simplify right side
    895.11x = 830,808.81
  5. Step 5: Solve for x
    x = 830,808.81/895.11
  6. Step 6: Final answer
    x = 928.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.