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Finding the Fourth Proportional to 459.50, 689.16 and 303.68

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Solution

The fourth proportional to 459.50, 689.16 and 303.68 is: 455.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.50 : 689.16 = 303.68 : x
  2. Step 2: Convert to fraction form
    459.50/689.16 = 303.68/x
  3. Step 3: Cross multiply
    459.50x = 689.16 × 303.68
  4. Step 4: Simplify right side
    459.50x = 209,284.11
  5. Step 5: Solve for x
    x = 209,284.11/459.50
  6. Step 6: Final answer
    x = 455.46

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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.