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Finding the Fourth Proportional to 646.02, 890.98 and 468.99

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Solution

The fourth proportional to 646.02, 890.98 and 468.99 is: 646.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.02 : 890.98 = 468.99 : x
  2. Step 2: Convert to fraction form
    646.02/890.98 = 468.99/x
  3. Step 3: Cross multiply
    646.02x = 890.98 × 468.99
  4. Step 4: Simplify right side
    646.02x = 417,859.54
  5. Step 5: Solve for x
    x = 417,859.54/646.02
  6. Step 6: Final answer
    x = 646.82

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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.