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Finding the Fourth Proportional to 356.08, 530.81 and 335.20

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Solution

The fourth proportional to 356.08, 530.81 and 335.20 is: 499.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.08 : 530.81 = 335.20 : x
  2. Step 2: Convert to fraction form
    356.08/530.81 = 335.20/x
  3. Step 3: Cross multiply
    356.08x = 530.81 × 335.20
  4. Step 4: Simplify right side
    356.08x = 177,927.51
  5. Step 5: Solve for x
    x = 177,927.51/356.08
  6. Step 6: Final answer
    x = 499.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.