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Finding the Fourth Proportional to 368.84, 509.02 and 285.82

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Solution

The fourth proportional to 368.84, 509.02 and 285.82 is: 394.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.84 : 509.02 = 285.82 : x
  2. Step 2: Convert to fraction form
    368.84/509.02 = 285.82/x
  3. Step 3: Cross multiply
    368.84x = 509.02 × 285.82
  4. Step 4: Simplify right side
    368.84x = 145,488.10
  5. Step 5: Solve for x
    x = 145,488.10/368.84
  6. Step 6: Final answer
    x = 394.45

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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.