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Finding the Fourth Proportional to 655.51, 898.05 and 630.89

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Solution

The fourth proportional to 655.51, 898.05 and 630.89 is: 864.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.51 : 898.05 = 630.89 : x
  2. Step 2: Convert to fraction form
    655.51/898.05 = 630.89/x
  3. Step 3: Cross multiply
    655.51x = 898.05 × 630.89
  4. Step 4: Simplify right side
    655.51x = 566,570.76
  5. Step 5: Solve for x
    x = 566,570.76/655.51
  6. Step 6: Final answer
    x = 864.32

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.