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Finding the Fourth Proportional to 374.51, 515.40 and 335.63

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Solution

The fourth proportional to 374.51, 515.40 and 335.63 is: 461.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.51 : 515.40 = 335.63 : x
  2. Step 2: Convert to fraction form
    374.51/515.40 = 335.63/x
  3. Step 3: Cross multiply
    374.51x = 515.40 × 335.63
  4. Step 4: Simplify right side
    374.51x = 172,981.13
  5. Step 5: Solve for x
    x = 172,981.13/374.51
  6. Step 6: Final answer
    x = 461.89

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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.