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Finding the Fourth Proportional to 895.77, 1,343.37 and 621.03

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Solution

The fourth proportional to 895.77, 1,343.37 and 621.03 is: 931.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.77 : 1,343.37 = 621.03 : x
  2. Step 2: Convert to fraction form
    895.77/1,343.37 = 621.03/x
  3. Step 3: Cross multiply
    895.77x = 1,343.37 × 621.03
  4. Step 4: Simplify right side
    895.77x = 834,273.07
  5. Step 5: Solve for x
    x = 834,273.07/895.77
  6. Step 6: Final answer
    x = 931.35

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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.