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Finding the Fourth Proportional to 612.51, 916.62 and 586.99

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Solution

The fourth proportional to 612.51, 916.62 and 586.99 is: 878.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.51 : 916.62 = 586.99 : x
  2. Step 2: Convert to fraction form
    612.51/916.62 = 586.99/x
  3. Step 3: Cross multiply
    612.51x = 916.62 × 586.99
  4. Step 4: Simplify right side
    612.51x = 538,046.77
  5. Step 5: Solve for x
    x = 538,046.77/612.51
  6. Step 6: Final answer
    x = 878.43

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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.