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Finding the Fourth Proportional to 386.06, 577.70 and 283.08

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Solution

The fourth proportional to 386.06, 577.70 and 283.08 is: 423.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.06 : 577.70 = 283.08 : x
  2. Step 2: Convert to fraction form
    386.06/577.70 = 283.08/x
  3. Step 3: Cross multiply
    386.06x = 577.70 × 283.08
  4. Step 4: Simplify right side
    386.06x = 163,533.90
  5. Step 5: Solve for x
    x = 163,533.90/386.06
  6. Step 6: Final answer
    x = 423.60

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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.