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Finding the Fourth Proportional to 459.62, 688.98 and 305.58

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Solution

The fourth proportional to 459.62, 688.98 and 305.58 is: 458.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.62 : 688.98 = 305.58 : x
  2. Step 2: Convert to fraction form
    459.62/688.98 = 305.58/x
  3. Step 3: Cross multiply
    459.62x = 688.98 × 305.58
  4. Step 4: Simplify right side
    459.62x = 210,538.51
  5. Step 5: Solve for x
    x = 210,538.51/459.62
  6. Step 6: Final answer
    x = 458.07

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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.