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Finding the Fourth Proportional to 830.42, 1,244.47 and 368.08

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Solution

The fourth proportional to 830.42, 1,244.47 and 368.08 is: 551.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    830.42 : 1,244.47 = 368.08 : x
  2. Step 2: Convert to fraction form
    830.42/1,244.47 = 368.08/x
  3. Step 3: Cross multiply
    830.42x = 1,244.47 × 368.08
  4. Step 4: Simplify right side
    830.42x = 458,060.49
  5. Step 5: Solve for x
    x = 458,060.49/830.42
  6. Step 6: Final answer
    x = 551.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.