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Finding the Fourth Proportional to 368.16, 503.40 and 354.72

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Solution

The fourth proportional to 368.16, 503.40 and 354.72 is: 485.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.16 : 503.40 = 354.72 : x
  2. Step 2: Convert to fraction form
    368.16/503.40 = 354.72/x
  3. Step 3: Cross multiply
    368.16x = 503.40 × 354.72
  4. Step 4: Simplify right side
    368.16x = 178,566.05
  5. Step 5: Solve for x
    x = 178,566.05/368.16
  6. Step 6: Final answer
    x = 485.02

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.