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Finding the Fourth Proportional to 895.95, 1,344.63 and 485.07

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Solution

The fourth proportional to 895.95, 1,344.63 and 485.07 is: 727.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.95 : 1,344.63 = 485.07 : x
  2. Step 2: Convert to fraction form
    895.95/1,344.63 = 485.07/x
  3. Step 3: Cross multiply
    895.95x = 1,344.63 × 485.07
  4. Step 4: Simplify right side
    895.95x = 652,239.67
  5. Step 5: Solve for x
    x = 652,239.67/895.95
  6. Step 6: Final answer
    x = 727.99

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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.