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Finding the Fourth Proportional to 386.66, 577.23 and 373.16

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Solution

The fourth proportional to 386.66, 577.23 and 373.16 is: 557.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.66 : 577.23 = 373.16 : x
  2. Step 2: Convert to fraction form
    386.66/577.23 = 373.16/x
  3. Step 3: Cross multiply
    386.66x = 577.23 × 373.16
  4. Step 4: Simplify right side
    386.66x = 215,397.28
  5. Step 5: Solve for x
    x = 215,397.28/386.66
  6. Step 6: Final answer
    x = 557.07

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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.