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Finding the Fourth Proportional to 368.74, 550.47 and 355.93

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Solution

The fourth proportional to 368.74, 550.47 and 355.93 is: 531.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.74 : 550.47 = 355.93 : x
  2. Step 2: Convert to fraction form
    368.74/550.47 = 355.93/x
  3. Step 3: Cross multiply
    368.74x = 550.47 × 355.93
  4. Step 4: Simplify right side
    368.74x = 195,924.26
  5. Step 5: Solve for x
    x = 195,924.26/368.74
  6. Step 6: Final answer
    x = 531.34

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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.