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Finding the Fourth Proportional to 536.26, 740.18 and 315.28

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Solution

The fourth proportional to 536.26, 740.18 and 315.28 is: 435.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.26 : 740.18 = 315.28 : x
  2. Step 2: Convert to fraction form
    536.26/740.18 = 315.28/x
  3. Step 3: Cross multiply
    536.26x = 740.18 × 315.28
  4. Step 4: Simplify right side
    536.26x = 233,361.31
  5. Step 5: Solve for x
    x = 233,361.31/536.26
  6. Step 6: Final answer
    x = 435.17

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Double scale
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Similar ratio
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1.5x scale

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.