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Finding the Fourth Proportional to 1,533.58, 2,300.64 and 493.81

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Solution

The fourth proportional to 1,533.58, 2,300.64 and 493.81 is: 740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.58 : 2,300.64 = 493.81 : x
  2. Step 2: Convert to fraction form
    1,533.58/2,300.64 = 493.81/x
  3. Step 3: Cross multiply
    1,533.58x = 2,300.64 × 493.81
  4. Step 4: Simplify right side
    1,533.58x = 1,136,079.04
  5. Step 5: Solve for x
    x = 1,136,079.04/1,533.58
  6. Step 6: Final answer
    x = 740.80

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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.