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Finding the Fourth Proportional to 460.19, 690.21 and 152.05

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Solution

The fourth proportional to 460.19, 690.21 and 152.05 is: 228.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.19 : 690.21 = 152.05 : x
  2. Step 2: Convert to fraction form
    460.19/690.21 = 152.05/x
  3. Step 3: Cross multiply
    460.19x = 690.21 × 152.05
  4. Step 4: Simplify right side
    460.19x = 104,942.98
  5. Step 5: Solve for x
    x = 104,942.98/460.19
  6. Step 6: Final answer
    x = 228.05

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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.