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Finding the Fourth Proportional to 402.19, 555.08 and 292.03

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Solution

The fourth proportional to 402.19, 555.08 and 292.03 is: 403.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.19 : 555.08 = 292.03 : x
  2. Step 2: Convert to fraction form
    402.19/555.08 = 292.03/x
  3. Step 3: Cross multiply
    402.19x = 555.08 × 292.03
  4. Step 4: Simplify right side
    402.19x = 162,100.01
  5. Step 5: Solve for x
    x = 162,100.01/402.19
  6. Step 6: Final answer
    x = 403.04

Related Problems

Find fourth proportional to 201.10, 277.54 and 146.02
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Double scale
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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.