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Finding the Fourth Proportional to 58.10, 86.58 and 56.53

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Solution

The fourth proportional to 58.10, 86.58 and 56.53 is: 84.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.10 : 86.58 = 56.53 : x
  2. Step 2: Convert to fraction form
    58.10/86.58 = 56.53/x
  3. Step 3: Cross multiply
    58.10x = 86.58 × 56.53
  4. Step 4: Simplify right side
    58.10x = 4,894.37
  5. Step 5: Solve for x
    x = 4,894.37/58.10
  6. Step 6: Final answer
    x = 84.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.