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Finding the Fourth Proportional to 1,064.90, 1,598.55 and 632.30

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Solution

The fourth proportional to 1,064.90, 1,598.55 and 632.30 is: 949.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064.90 : 1,598.55 = 632.30 : x
  2. Step 2: Convert to fraction form
    1,064.90/1,598.55 = 632.30/x
  3. Step 3: Cross multiply
    1,064.90x = 1,598.55 × 632.30
  4. Step 4: Simplify right side
    1,064.90x = 1,010,763.17
  5. Step 5: Solve for x
    x = 1,010,763.17/1,064.90
  6. Step 6: Final answer
    x = 949.16

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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.