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Finding the Fourth Proportional to 929.45, 1,282.58 and 536.44

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Solution

The fourth proportional to 929.45, 1,282.58 and 536.44 is: 740.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.45 : 1,282.58 = 536.44 : x
  2. Step 2: Convert to fraction form
    929.45/1,282.58 = 536.44/x
  3. Step 3: Cross multiply
    929.45x = 1,282.58 × 536.44
  4. Step 4: Simplify right side
    929.45x = 688,024.53
  5. Step 5: Solve for x
    x = 688,024.53/929.45
  6. Step 6: Final answer
    x = 740.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.