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Finding the Fourth Proportional to 536.82, 740.40 and 315.53

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Solution

The fourth proportional to 536.82, 740.40 and 315.53 is: 435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.82 : 740.40 = 315.53 : x
  2. Step 2: Convert to fraction form
    536.82/740.40 = 315.53/x
  3. Step 3: Cross multiply
    536.82x = 740.40 × 315.53
  4. Step 4: Simplify right side
    536.82x = 233,618.41
  5. Step 5: Solve for x
    x = 233,618.41/536.82
  6. Step 6: Final answer
    x = 435.19

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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.