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Finding the Fourth Proportional to 895.06, 1,339.23 and 621.68

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Solution

The fourth proportional to 895.06, 1,339.23 and 621.68 is: 930.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.06 : 1,339.23 = 621.68 : x
  2. Step 2: Convert to fraction form
    895.06/1,339.23 = 621.68/x
  3. Step 3: Cross multiply
    895.06x = 1,339.23 × 621.68
  4. Step 4: Simplify right side
    895.06x = 832,572.51
  5. Step 5: Solve for x
    x = 832,572.51/895.06
  6. Step 6: Final answer
    x = 930.19

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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.