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Finding the Fourth Proportional to 454, 680.47 and 210.01

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Solution

The fourth proportional to 454, 680.47 and 210.01 is: 314.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    454 : 680.47 = 210.01 : x
  2. Step 2: Convert to fraction form
    454/680.47 = 210.01/x
  3. Step 3: Cross multiply
    454x = 680.47 × 210.01
  4. Step 4: Simplify right side
    454x = 142,905.50
  5. Step 5: Solve for x
    x = 142,905.50/454
  6. Step 6: Final answer
    x = 314.77

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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.